Ok here is a question about this wood bed that I have been wondering now for some time... The floor in it now is the stock steel floor just like every other pickup bed. I don't even think they made wood beds in 66 F100's but who knows. So if this is the case, can I just cut out the old floor and put the wood one in? If so then how in the heck to the boards stay in the bed? Do I have to make or buy cross members?